http://www.ucsusa.org/scientific_integrity/abuses_of_science/case_studies_and_evidence/a-to-z-guide-to-political.html?utm_source=fb&utm_medium=fb&utm_campaign=fb

In recent years, scientists who work for and advise the federal government have seen their work manipulated, suppressed, distorted, while agencies have systematically limited public and policy maker access to critical scientific information. To document this abuse, the Union of Concerned Scientists has created the A to Z Guide to Political Interference in Science.